Abstract
Renal damages after ESWL treatment were examined by Gd-DTPA enhanced dynamic MRI.
Gd-DTPA was used as the contrast medium and fast magnetic resonance imaging with suspended respiration using the flip angle of 20 degrees and gradient echo technique at 0.5 Tesla was used for photographing.
In normal kidneys, a low intensity band was observed with the passage of Gd-DTPA through the kidney from 1 to 2 minites after the injection. In patients who underwent ESWL treatment, however, the low intensity band which was observed before ESWL treatment became partly obscure after ESWL treatment. Furthermore, these find changes in the renal parenchyma could not be fully datected by usual MRI which does not use Gd-DTPA.
Gd-DTPA enhanced dynamic MRI was considered to be effective for finding the limited dose of shock waves for ESWL treatment.
